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Re: File Detection

Hi

No problem ;-)

[NSWorkspace noteFileSystemChanges:(NSString *)path] is surely not what you are looking for.
This functin does inform the system that there has been a file system change at *path*
The system can use this to update finder windows or something like this, if *path* is open...


Am Dienstag, 29.04.03 um 05:28 Uhr schrieb Anthony Cheung:

Hi Andreas,

Thanks for your help. I have studied NSWorkspace and found that method
noteFileSystemChanged:(NSString *)path. It said it gets the status of all
the files and directories it is interested in and updates itself
appropriately. Do you think that can help? Do you have some sample code for
this?

Many thanks. :)

Regards,

Anthony

----- Original Message -----
From: "Andreas Schempp" <email@hidden>
To: "Anthony Cheung" <email@hidden>
Cc: <email@hidden>
Sent: Monday, April 28, 2003 10:10 PM
Subject: Re: File Detection


You can try to use the NSWorkspace notificationCenter to detect file
system
changes.
Register for NSWorkspaceDidPerformFileOperationNotification on the
[NSWorkspace notificationCenter]

This will tell you whenever ANYTHING on your disk is changed, I don't know
if this is too much...


Better let the user decide how often to check for folder changes (slider
for
timer).
I don't think its too bad to check every - say - 2 minutes for new files.


I think NSFileManager would not work, because you have to define an
absolute
path. You can't specifie a folder, because the folder is not moved, copied
or renamed. Only it's content is changed.



Hello everyone,

I am writing a Cocoa application which detects what files are go into a
folder, that is a hot folder. I have checked NSFileManager which
provides
a
delegate method - willProcessPath: . However, it seems that
NSFileManager
doesn't have any notification center.

Then what I do is to attach a NSTimer and regularly check if there is
any
new
file come into the folder. However, I am afraid that will involve a lot
of
processor resource. Would you kindly suggest another method.

Regards,

Anthony Cheung
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